package com.sky.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sky.annotaion.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.enumeration.OperationType;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.Value;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @AutoFill(value = OperationType.INSERT)
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO, category);

        //分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);

        //设置创建时间、修改时间、创建人、修改人
        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.insert(category);
    }

    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        Page<Category> page = new Page<>(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        LambdaQueryWrapper<Category> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.like(categoryPageQueryDTO.getName() != null &&
                        categoryPageQueryDTO.getName() != "",
                Category::getName, categoryPageQueryDTO.getName());
        lambdaQueryWrapper.like(categoryPageQueryDTO.getType() != null,
                Category::getType, categoryPageQueryDTO.getType());


        lambdaQueryWrapper.orderByAsc(Category::getSort).orderByDesc(Category::getCreateTime);

        categoryMapper.selectPage(page, lambdaQueryWrapper);
        long total = page.getTotal();
        List<Category> records = page.getRecords();

        return new PageResult(total, records);
    }

    @Override
    public void deleteById(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        //删除分类数据
        categoryMapper.deleteById(id);
    }

    @AutoFill(value = OperationType.UPDATE)
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.updateById(category);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = new Category();
        category.setStatus(status);
        category.setId(id);
        category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.updateById(category);

    }

    @Override
    public List<Category> list(Integer type) {
        LambdaQueryWrapper<Category> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(type != null, Category::getType, type);
        return categoryMapper.selectList(lambdaQueryWrapper);
    }
}
